switch to using own event system

src/ui/MainWindow.h

@@ -7,7 +7,10 @@
 
 #include "BuildingBlocksChangedEvent.h"
 #include "BuildingId.h"
+#include "EscapeMenuRequestedEvent.h"
 #include "EventHandler.h"
+#include "GameOverEvent.h"
+#include "LayoutDialogRequestedEvent.h"
 #include "SchematicChoicesAvailableEvent.h"
 #include "ShipLayoutBlueprint.h"
 #include "Tick.h"
@@ -24,7 +27,10 @@ class QResizeEvent;
 
 class MainWindow : public QWidget,
                    public CombinedEventHandler<BuildingBlocksChangedEvent,
-                                               SchematicChoicesAvailableEvent>
+                                               SchematicChoicesAvailableEvent,
+                                               GameOverEvent,
+                                               EscapeMenuRequestedEvent,
+                                               LayoutDialogRequestedEvent>
 {
     Q_OBJECT
 
@@ -39,13 +45,11 @@ protected:
 private:
     void handleEvent(std::shared_ptr<const BuildingBlocksChangedEvent> event) override;
     void handleEvent(std::shared_ptr<const SchematicChoicesAvailableEvent> event) override;
+    void handleEvent(std::shared_ptr<const GameOverEvent> event) override;
+    void handleEvent(std::shared_ptr<const EscapeMenuRequestedEvent> event) override;
+    void handleEvent(std::shared_ptr<const LayoutDialogRequestedEvent> event) override;
     void layoutPanels();
 
-private slots:
-    void onGameOver();
-    void onEscapeMenuRequested();
-    void onLayoutDialogRequested(BuildingId shipyardId);
-
 private:
     std::string            m_configDir;
     VisualsConfig          m_visuals;